'very casual' mashing
10/12 22:36:02.967  Your Scorch hits Servant of Razelikh for 1109 Fire damage.
10/12 22:36:03.049  You fail to cast Scorch: Not yet recovered.   (note: this message comes from the server, not from the client. This is the major change.)
10/12 22:36:03.232  You fail to cast Scorch: Not yet recovered.
10/12 22:36:03.400  You fail to cast Scorch: Not yet recovered.
10/12 22:36:03.599  You fail to cast Scorch: Not yet recovered.
10/12 22:36:03.799  You fail to cast Scorch: Not yet recovered.
10/12 22:36:03.985  You fail to cast Scorch: Not yet recovered.
10/12 22:36:04.166  You fail to cast Scorch: Not yet recovered.
10/12 22:36:04.353  You fail to cast Scorch: Not yet recovered.
10/12 22:36:04.617  Your Scorch hits Servant of Razelikh for 1152 Fire damage.

G15 mashing with 0.025s interval.
10/12 22:48:15.777  Your Scorch crits Servant of Razelikh for 1764 Fire damage.
10/12 22:48:15.811  You fail to cast Scorch: Not yet recovered.
10/12 22:48:15.827  You fail to cast Scorch: Not yet recovered.
10/12 22:48:15.861  You fail to cast Scorch: Not yet recovered.
10/12 22:48:15.894  You fail to cast Scorch: Not yet recovered.
10/12 22:48:15.928  You fail to cast Scorch: Not yet recovered.
10/12 22:48:15.961  You fail to cast Scorch: Not yet recovered.
10/12 22:48:15.978  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.011  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.061  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.077  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.111  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.144  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.177  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.211  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.260  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.260  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.294  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.327  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.361  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.394  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.428  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.461  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.495  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.526  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.543  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.578  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.614  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.644  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.678  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.696  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.745  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.793  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.793  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.828  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.860  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.895  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.895  You gain 54 Mana from Master of Elements.
10/12 22:48:16.928  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.962  You fail to cast Scorch: Not yet recovered.
10/12 22:48:16.978  You fail to cast Scorch: Not yet recovered.
10/12 22:48:17.010  You fail to cast Scorch: Not yet recovered.
10/12 22:48:17.045  You fail to cast Scorch: Not yet recovered.
10/12 22:48:17.078  You fail to cast Scorch: Not yet recovered.
10/12 22:48:17.112  You fail to cast Scorch: Not yet recovered.
10/12 22:48:17.145  You fail to cast Scorch: Not yet recovered.
10/12 22:48:17.162  Servant of Razelikh is afflicted by Ignite.
10/12 22:48:17.178  You fail to cast Scorch: Not yet recovered.
10/12 22:48:17.210  You fail to cast Scorch: Not yet recovered.
10/12 22:48:17.347  Your Scorch crits Servant of Razelikh for 1816 Fire damage.

define( "lag", .1 );

function simulation( $set_dmg, $set_cast, $set_proc ) {
	for( $x = 0; $x <= 10000; $x++ ) {
		$time = 0;
		$damage = 0;
		
		while( $time <= 300 ) {
			if( rand( 1, 100 ) <= $set_proc )
				$cast = $set_cast / 2 + lag;
			else
				$cast = $set_cast + lag;
			
			if( $cast + $time > 300 )
				$add_damage = ($set_dmg / $cast) * (300 - $time);
			else
				$add_damage = $set_dmg;
			
			$damage += $add_damage;
			$time += $cast;
		}
		
		$results[] = $damage;
	}

	$total = round( (array_sum( $results ) / count( $results )) / 300 );

	return $total;
}

echo "5 sec.: " . round(simulation( 5000, 5, 26.49 ) / simulation( 5000, 5, 0 ), 3) . "x<br>";

echo "4 sec.: " . round(simulation( 5000, 4, 26.49 ) / simulation( 5000, 4, 0 ), 3) . "x<br>";